The level of calcium in the blood of healthy young adults follows a normal distribution with mean u = 10 milligrams per deciliter and standard deviation s = 0.4. A clinic measures the blood calcium of...

The level of calcium in the blood of healthy young adults follows a normal distribution with mean u = 10 milligrams per deciliter and standard deviation s = 0.4.  A clinic measures the blood calcium of 100 healthy pregnant young women at their first visit for prenatal care.  The sample mean of these 100 measurements is  X = 9.8.  Is this evidence that the mean calcium level in the population from which these women come is less than 10?  To answer this question, we perform the following hypothesis test: H0: u = 10, Ha: u < 10.="" what="" is="" the="" test="" statistic?="" (use="" two="" decimal="" places="" in="" your="">

What is the p-value equal to?

At the 10% significance level, do you accept or reject the null hypothesis? Answer ACCEPT or REJECT

t the 5% significance level, do you accept or reject the null hypothesis? Answer ACCEPT or REJECT